Although it might be possible to replace your laptop's apu, I wouldn't do it. Right now you have almost the best apu available for it anyway, and the only difference between the a8 4500m and the a10 5750m is 600mhz. You wouldn't see much improvement in any games. If you want to do something, you could upgrade the ram to 8gb, then you might see some improvements. After that, any more ram is not used in games. But to be honest, I wouldn't put any money in it. A new apu would cost at least $100. Save your money and build a desktop.